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NEET Sample Paper NEET Sample Test Paper-18

  • question_answer
    A string of negligible mass going over a clamped pulley of mass m supports a block of mass M as shown in the figure. The force on the pulley by the clamp is given by

    A) \[\sqrt{2}mg\]             

    B) \[\sqrt{2}mg\]

    C) \[[\sqrt{{{(M+m)}^{2}}+{{m}^{2}}}]g\]          

    D) \[[\sqrt{{{(M+m)}^{2}}+{{M}^{2}}}]g\]  

    Correct Answer: C

    Solution :

    Force on the pulley by the clamp = resultant of T (M + m) g and mg acting along horizontal and vertical directions respectively, \[=\sqrt{{{[(M+m)g]}^{2}}+{{(mg)}^{2}}}\] \[=[\sqrt{{{(M+m)}^{2}}+{{m}^{2}}}]g\] Hence, the correction option is [c].


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